4.Speaking of which: Cleopatra lived closer in time to the invention of the iPhone than to the construction of the Great Pyramids.

There are almost 2,500 years between the construction of the pyramids (2580 to 2560 BC) and Cleopatra's birth (69 BC). In contrast, there are only 2,037 years between Cleopatra's death (30 BC) and the first iPhone (2007).

18.The time period stretching between the existence of humans and the existence of the T-Rex is barely shorter than the time period separating the existence of the T-Rex and the stegosaurus.

T-Rexes lived in the Cretaceous period, which lasted from 83.6 million years ago to 66 million years ago. The stegosaurus lived about 150.8 million years ago, which meant it lived about 67 million years before the T-Rex's time.

19.After English, German is the most widely spoken language in North Dakota.